How To Calculate Commodity Channel Index (CCI) in C#?

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public double CalculateCCI(List<double> highs, List<double> lows, List<double> closes, int period)
{
    List<double> typicalPrices = new List<double>();
    List<double> smaTypicalPrices = new List<double>();
    List<double> meanDeviations = new List<double>();
    List<double> cciValues = new List<double>();

    for (int i = period; i < highs.Count; i++)
    {
        double typicalPrice = (highs[i] + lows[i] + closes[i]) / 3;
        typicalPrices.Add(typicalPrice);

        double sma = typicalPrices.Skip(i - period).Take(period).Average();
        smaTypicalPrices.Add(sma);

        double meanDeviation = typicalPrices.Skip(i - period).Take(period).Select(tp => Math.Abs(tp - sma)).Sum() / period;
        meanDeviations.Add(meanDeviation);

        double cci = (typicalPrice - sma) / (0.015 * meanDeviation);
        cciValues.Add(cci);
    }

    return cciValues.Last();
}